Improvement in lubricator



(Staten @sind y mcrae-w L. SWEET AND COMPANY, OF SAME PLACE.

Letters Patent No. 89,175, dated April 20, 1869.

IIPROVEMENT IN LUBRIC'ATOR.

The Schedule referred to in these Letters Patent and making plrt of the lama.

To all whom 'it may concern:

Be it known that I, ALEXANDER SHAFER, of Wellsville, Allegany county, New York, have invented a new and improved Rotary Oiling-Pump; and I do hereby declare that the following is af'ull, clear, and exact description thereof, which will enable others skilled in the art to make and use the same, reference being had t the accompanying drawing, forming part of this specification.

The figure isa detail sectional view of my improved oiling-pump.

My invention has for its object to furnish an improved device for introducing oil into the steam-chest, or cylinder of a steam-engine, which shall be so constructed that the oil may be introduced in any desired quantity and at any desired time; and

lt consists in the construction of the device as here--A inafter more fully described.

A is the body ofthe device, which may be made of any desired form.

The body A is perforated with a tapering hole, into which is fitted and ground the tapering plug B, to the outer end of whichis attached a hand-wheel, or crank, (l, for convenience in operating the said plug.

The plug Bis secured in place and drawn forward, or tightened as it becomes worn, by means of a screwnut screwed upon its forward end, in the manner of a stop-cock plug.

In the tapering face of the plug B is formed a number of cavities, or recesses b', to receive the oil from the reservoir l) and convey it to the pipe, or hollow stem a, through which it passes to the steamchest, vor cylinder of the engine, and by means of which, the device is secured to said steam-chest, or cylinder,

The pipe, or hollowr stem a has a screw-thread cut upon it to enable it to be conveniently attached to said steam-chest, or cylinder.

The oil-reservoir D may be of any desired form or size, and may sit directly upon the body A, or may be connected to said body by a short pipe, as may be desired or convenient.

If desired, the oil-reservoir D may be cast asa solid part of the body A.

a2 is an opening, or vent, formed through the side of the body A, to allow the steam brought up by the recesses, or cavities b of the plug B to escape, so that the oil may ow freely into the said recesses, or cavities.

.In using the device, any desired amount of oil is placed in the reservoir D. Then, when it is desired or necessary to introduce oil into the steam-chest, or cylinder to which the device` is attached, the plug B is turned in the direction from the opening, or vent a. As each cavity, or recess b comes beneath the reservoir D, the oil from said reservoir ows into and fills said cavity, which oil, as the said cavity comes opposite the pipe, or hollow stem a), llows through said pipe, or stem into the steam-chest, or cylinder to be oiled, the steam from the said chest, or cylinder filling the said cavity as the oil flows out.

capes through saidvent into the air, forming a partial vacuum in said cavity, so that when it again comes opposite the reservoir D, the oil may again flow into it freely.

It should be observed that the reservoir D, opening into the hollow stem, or pipe a, and vent a2 of the body A, and cavities b ofthe plug B, should all be in' the same vertical plane.

This construction allows any desired amount of oil to be introduced or pumped into said steamchest, or cylinder, at any desired time.

If desired, the vent a2 may be provided with a valve opening outward, but in general, this will not be necessary.

I claim as new, and desire to secure by Letters Patenti' An improved rotary oiling-pump, formed by the combination of the body A a a?, plug B b', and oilreservoir D, with each other, said parts being constructed and operating substantially as herein shown and described, and for the purpose set forth.

ALEXANDER SHAFER. A Witnesses:

ALEXANDER SMrrH, GEO. W. RUSSELL.

As each cavity b' 'comes opposite the vent, or opening a2, the steam-esopening from the- 

